Answer: Option(B) is correct.
Explanation:
Correct option: China will export shirts, while the United States will export aircraft.
Yes, these countries do trade with each other. China has a comparatively less absolute disadvantage i.e, comparative advantage in the production of shirts. Whereas on the other hand, United states will export aircraft as it has a comparative advantage in producing it.
Therefore, china will export shirts and United states will exports aircraft.